A Phoronix Test Suite user has uploaded these AHCI vs. IDE disk comparison results from an AMD E-350 system with a Toshiba hard drive. On the software side was SUSE Linux 12.1 with the Linux 3.5 kernel. The file-system being used during this disk benchmarking was Btrfs.
Details and results in full are available on OpenBenchmarking.org via the 1207280-SU-AHCIVSIDE43 and 1207284-SU-AHCIMODEV67 result files. Below are a few of the results from this Linux AHCI vs. IDE mode comparison.
Find other interesting open-source / Linux benchmark results from the OpenBenchmarking.org home-page. More OpenBenchmarking.org improvements are coming during the Randaberg and Unterschleissheim development cycles; feature requests and other comments continue to be welcomed as well.